ServicingtheSparkPlug
ServiceInterval:Every100hours
UseanNGKBPR5ESsparkplugorequivalent.
1.Shutofftheengineandwaitforallmovingparts
tostop.
2.Disconnectthewirefromthesparkplug.
3.Cleanaroundthesparkplug.
4.Removethesparkplugfromthecylinderhead.
Important:Replaceacracked,fouled,or
dirtysparkplug.Donotcleantheelectrodes
becausegritenteringthecylindercan
damagetheengine.
5.Setthegapontheplugto0.76mm(0.030inch);
refertoFigure32.
g000533
Figure32
1.Center-electrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
6.Installthesparkplugandthegasketseal.
7.Torquetheplugto23N∙m(17ft-lb).
8.Connectthewiretothesparkplug.
CheckingtheConditionof
theBelts
ServiceInterval:Every50hours
1.Shutofftheengineandwaitforallmovingparts
tostop.
2.Removethebeltcover(Figure9)byremoving
the4boltsthatholdittothemachinehousing.
3.Checkthebeltsforanycracks,frayededges,
burnmarks,oranyotherdamage.
4.Replacealldamagedbelts.
5.Ifyoureplacetheblade-drivebelt,youmust
adjustit.RefertoServicingtheBlade-Drive
System(page22).
6.Installthebeltcoverwiththe4boltsthatyou
removedinstep2.
EmptyingtheFuelTankand
CleaningtheFilter
ServiceInterval:Every50hours—Checkthefuel
hoseandreplaceitifnecessary.
Every100hours—Cleanthefueltanklter.
Yearlyorbeforestorage—Emptythefueltank
beforerepairsasdirectororbeforestorage.
Note:Thefueltanklter(screen)elementislocated
insidethefueltankattheoutlet.Thislterisapartof
thefueltankandcannotberemoved.
1.Shutofftheengineandwaitforittocooldown.
Important:Drainfuelfromacoldengine
only.
2.Disconnectthewirefromthesparkplug.
3.Closethefuel-shutoffvalve.
4.Disconnectthefuellinebylooseningthetube
clampatthecarburetor.
5.Openthefuel-shutoffvalveanddrainthefuel
completelyfromthetankandfuellineintoan
approvedfuelcontainer.
6.Removethefueltankfromthemachine.
7.Pourasmallamountoffuelinthefueltank,
movethefuelaroundinthetank,andpouritout
intoanapprovedfuelcontainer.
8.Installthefueltankandthefuelline.
ChangingtheFuelFilter
ServiceInterval:Every100hours
1.Shutofftheengineandwaitforallmovingparts
tostop.
2.Disconnectthewirefromthesparkplug.
3.Closethefuel-shutoffvalve(Figure33).
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